| 摘要 |
1. Process for preparing carbamic derivatives of formula : see diagramm : EP0155862,P21,F2 in which R**1 and R**2 , which may be identical or different, denote : - a hydrogen atom, - a substituted, saturated or unsaturated, linear or branched aliphatic or araliphatic radical, - a substituted or unsubstituted, saturated or unsaturated heterocyclic radical, or together form with the nitrogen atom to which they are bound a substituted or unsubstituted, saturated or unsaturated ring which can contain one or more other hetero atoms and which can form part of a ring system, Y denotes OR, SR, see diagramm : EP0155862,P21,F3 or see diagramm : EP0155862,P21,F4 in which R denotes a substituted or unsubstituted, saturated or unsaturated, linear or branched aliphatic or araliphatic radical, a substituted or unsubstituted, saturated or unsaturated cycloaliphatic residue, or a substituted or unsubstituted aromatic residue, R**3 and R**4 , which may be identical or different, denote a hydrogen atom, a substituted or unsubstituted, saturated or unsaturated aliphatic, araliphatic, cycloaliphatic or heterocyclic radical, or a substituted or unsubstituted aromatic radical, or together form with the nitrogen atom to which they are bound a saturated or unsaturated, substituted or unsubstituted heterocycle which can contain one or more other hetero atoms, and R**6 and R**7 , which may be identical or different, denote a saturated or unsaturated, substituted or unsubstituted, linear or branched aliphatic or cycloaliphatic radical, or denote, but not at the same time, a hydrogen atom, an alkylthio radical or an alkyloxy radical, characterised in that a hydrogen-containing amino compound of formula : see diagramm : EP0155862,P22,F1 is reacted in the presence of an acceptor for hydrohalic acid, at a temperature between -5 degrees C and 150 degrees C, with an halogenated derivative of carbonic acid of formula : see diagramm : EP0155862,P22,F2 in which R**1 , R**2 and Y have the above significance, X denotes a fluorine, chlorine or bromine atom and R**5 denotes a hydrogen atom, a substituted or unsubstituted, saturated or unsaturated, aliphtic, araliphatic or cycloaliphatic residue or a substituted or unsubstituted aromatic residue. |
